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Finding the Fourth Proportional to 7,348.60, 11,012.10 and 2,958.40

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Solution

The fourth proportional to 7,348.60, 11,012.10 and 2,958.40 is: 4,433.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,348.60 : 11,012.10 = 2,958.40 : x
  2. Step 2: Convert to fraction form
    7,348.60/11,012.10 = 2,958.40/x
  3. Step 3: Cross multiply
    7,348.60x = 11,012.10 × 2,958.40
  4. Step 4: Simplify right side
    7,348.60x = 32,578,196.64
  5. Step 5: Solve for x
    x = 32,578,196.64/7,348.60
  6. Step 6: Final answer
    x = 4,433.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.